Washington Herbicide Practice Exam

Using larger droplet sizes is an effective practice to minimize the risk of herbicide drift during application. Smaller droplets can become easily airborne due to wind or air turbulence, leading to unintended movement of the herbicide away from the target area. By opting for larger droplets, the likelihood of drift is significantly reduced, as they are heavier and less likely to be affected by wind. This practice contributes to more effective pest management and protects nearby vegetation and sensitive areas from potential harm caused by herbicide exposure.

In contrast, applying during high winds increases the chances of drift, as the wind can carry smaller droplets away from the intended application site. Spraying at higher pressures typically creates finer droplets, which further heightens the drift risk. Simply mixing chemicals with water does not directly address drift concerns, as it may still result in the creation of fine droplets that are susceptible to wind. Therefore, the choice of using larger droplet sizes stands out as a key method to mitigate drift risks effectively.